FILE - Hostages sit with their weapons in the school in Beslan, Russia taken in this undated image from television during the early part of the siege which began on Sept. 1, 2004 and ended with over 300 people dead. Two suspects in the Boston Marathon bombing have been identified to The Associated Press as coming from a Russian region near Chechnya In the past, insurgents from Chechnya and neighboring restive provinces in the Caucasus have been involved in terror attacks in Moscow and other places in R